Keanu Reeves, Alex Winter start filming ‘Bill & Ted Face the Music’

Break out the Valleyspeak dictionary, fine-tune your air guitar and call up Socrates for a reunion most excellent!

Keanu Reeves and Alex Winter, who staged high school’s most awesome history lesson 30 years as California time travelers in “Bill & Ted’s Excellent Adventure,” and later in “Bill & Ted’s Bogus Journey” are back for a third go-round as San Dimas’ most triumphant dudes.

On Tuesday, Winter aka William “Bill” Preston, Esquire, and Reeves (Theodore Logan) were spotted in New Orleans filming the third installment of the “Bill & Ted” trilogy titled “Bill and Ted Face the Music.”

Little is known about the plot, other than the aging slackers meet a visitor from the future who informs them that they must create a song so righteous that it can save the universe.

Back in 1989, the buds sought rock ‘n’ roll glory with their band Wyld Stallyns. In a nod to their musical roots, Winter posted an image of himself sporting a Wyld Stallyns T-shirt.

“Day one,” tweeted Winter on Monday. “See you on the other side and remember to be excellent.”

“It’s funny!” said Reeves regarding the “Face the Music” screenplay during a 2016 interview with Entertainment Tonight. “It’s about the pressure of Bill and Ted having to save the world and it’s not quite working out.”

Several familiar faces from the series will appear in the third installment, including Amy Stoch as Bill’s smoking-hot stepmother, Missy; Hal Landon as Ted’s dad, Captain Logan; and William Sadler reprising his role as the Grim Reaper from “Bogus Journey.”

“Bill & Ted Face the Music” is slated to hit theaters in August 2020 – a wait time most heinous for the most resplendent “Bill & Ted” fans.